I'm happy to announce that after taking the plunge and buying a Lexicon Lambda USB sound interface, that it appear to be working fine for my needs with Linux.
specs:
MIDI in/out
Two channels duplex audio (viewed as one 'track' of stereo, or two tracks of mono)
Two phantom powered XLR mic inputs.
Two inserts for hardware effects (send and receive on one plug)
All in all, a worthy buy....but my big tip for USB audio would be this: make sure to pick your USB port wisely...try to pick one from a bus that has a better IRQ priority (look at the /proc/interrupts output to find a good one, compare to output of 'lsusb' to find optimal port) On my little laptop, it made a HUGE HUGE difference in the occurrence of xruns/dropouts...I had jack setup for ~20ms and still
had problems, i.e. gobs of xruns, where with the right USB port, I could get down to 5ms with total stability, even without a low-latency kernel!!! Also, load the snd-usb-audio module with the 'nrpacks=1' option as explained elsewhere.
BTW, I'm running Arch Linux on my wife's old Thinkpad X40, much lighter and quieter machine than the old Dell Inspiron 8200 I had been carrying around for years (although the X40 has 4200rpm drives, which I think is slower than the Dell, but so far, I haven't needed faster--we'll see)
Best,
--
Aaron Krister Johnson
http://www.akjmusic.com
http://www.untwelve.org
--
Aaron Krister Johnson
http://www.akjmusic.com
http://www.untwelve.org
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